Machine



A. C. V. MALM.

MACHINE FOR FORMING TUBULAH CONTAINERS.

ATTORNEY A. C. V. MALM.

MACHINE FOR FORMING TUBULAR CONTAINERS.

APPLICATION man ocr. 7. 191s.

1,399,636. Patented Dec. 6, 1921.

5 SHEETS-SHEET 2.

IN VEN TOR.

ATTORNEY r A. c. v. MALM. MACHINE FOR FORMING TUBULAR CONTAINERS.

I APPLICATION FILED OCT. Y, |918. 1,399,636, Patented Dec. 6, 1921.

5 SHEETS--SHEET 3.

A T'ToRNEY A. C. V. MALM.

MACHINE FOR FORMING TUBULAR CONTAINERS.

APPLlcATloN FILED ocT. 1. 191e.

1,399,686. Paten Dec. 6, 1921.

w 5 MEETS-SHEET 4. \o

INVENToR.

EXIL GWV/$2 M A TTORNE Y A. C. V. MALM.

MACHINE FOR FORMING TUBULAN CONTAINERS.

. I APPLICATION FILED OCT. 7| 1919- Dec. 6,

5 SHEETS-'SHEET 5.

ATT'oRNEx/s.

UNITED STATES PATENT orties.

AXEL C. V. MALM, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE PENNSYL- VANIA PAPE-R PRODUCTS COMPANY, OF PITTSBJ'RG-H',fPENNE.L'LUZANIA7 A CORP0 RATON OF DELAWARE.

IJIACHNE FR EORMENG TUBLAR CGJTAINERS.

Application led October 7',

T @ZZ whom t may concern, i

Be it known that l, .5. V. Mami",

citizen ollr the United states, residing at `Philadelphia, in the county oit Philadelphia and State ot Pennsylvania, have invented certain new and useful improvements in Machines for Forming` Tubular Containers, oi which the following is a specification, reference being hal therein to the accompanying' drawing. n

This invention relates to mechanism for making tubular containers, Y

The object oi2 the invention is lto provide mechanism oit' this hind, which will produce accurately formed tubular containers at a high rate of speed.

4further object of the invention is to provide mechanism of this lrind which will operate automatically to sever a sheet oi material, such as paper, from a web ot such material, apply an adhesive to the surface oit said sheet, wind the sheet into tubular term, and remove the same from the winding mechanism.

Other objects of the invention will appear as the mechanism is described in detail.

ln the accompanying drawings, Figure l is a side elevation of a mechanism embodying my invention; Fig. 2 is a section taken just inside oithe side frame'meniber ot the feeding and cement applying` device; Figi'. 3 `is a transverse sectional view taken through the winoii'ip; mechanism; Fig'. l is a 'iront elevation partly in section ot winding mechanism; Fig. 5 is. a section taken on the line 5-5 of Fig. d; Fig. (l is an end elevation of one ot the winding mandrels; Fig. 7 is a detail view ot the gripping device; and Fig. 8 is a side elevation oi' the winding mechanism, partly broli'en away, showing` the ejector.

ln these drawings l have shown the invention as embodied in a mechanism designed moire particularly tor the production ot tubular paper containers for 'the propellent charges for large caliber guns, but it will be understood that this particular emiodiment ot the inventionA has been chosen for the purpose of illustration only, and that containers and tubular structures of various kinds and shapes, and for various purposes, can be produced w;

il tile .th little or no modilication of the mechanism.

ln carryingout my inv '1i-ion. l have provided mechanism for feeding a web of paper Patented Dec. 6, 1921.

191e. serial ne. 257,126.

nism here illustrated, the cement is applied to the web before the sheet is severed there- 'r'om and the cutting device is so timed with relation to the cement applying` ldevice that the sheet will be severe-d at the i-eay end oit Ithe uncemented portion ol`I the web. A conveyor taires the severed cemented sheet and delivers the same to a winding mechanism, which preferably consists oli' a plurality oi" winding; elements, such as drums or mandrels, which are so actuated that the overal mandrels will be brought successively into a position to receive a sheet trom the conveyor. As each manorel is brought into itssheet 'receiving` position it grips the forward edge of' t-he sheet and winds the same about the mandrel, each mandrel being' rotated about its individual axis to cause tlie sheet to be wound about the same.

fis the winding `element or mandrel continues its bodily movement the tube into "-.jfhich the sheet has been wound is released from the mandrel, preferably by collapsing tie latter, and the tube is then engaged by a removingdevice, or ejector, which moves then tube longitudinally from the mandrel, 'and the mandrel. then continues its bodily movement into a position to receive another sheet. y n

, ln Ithe particular embodiment of the invention herev illustrated, the cementing and devices aremounted on a frame consisting of side members l, connected one to the other by tie bars 2. This frame is provided with bea 'ings 3 to receive a shaft Il on which a roll of paper or other flexible material 5 may be mounted, and the bearings are preferably provided with clamping,` members G which may be caused to exert trictional resistance to the rotation of the shaft 4- and thus retard the movement of the roll 5 to prevent the web of paper from being unwound faster than it is fed forward by the feeding device. The web ot paper is carried from the roll about a dw n 7 fiournaled in the side members of l( the iframe, and between the drum and the VI have employed a rubber cement, but it will befunderstood that any suitable adhesive may be used, and that the term cement, as herein used, is intended to include any adhesivewhichniay be applied in the manner set forth. This cement is preferably applied to one surface only of the sheet, and in the present construction I apply the cement to the sheet before it is severed from the web. To this end I have provided, adj acent to the feeding device,` a cement applying device which consists of a blade 10 extending transversely of the web and having its lower edge arranged close to,but spaced a short distance from, the upper surface of the web of paper, as it passes about the drum 7. A quantity of the cement is deposited upon the sheet alongthe edge of the blade 10 where the paper is supported by the drum. The blade extends the full width of the sheet and as the sheet is fed forward a thin layer of the cement will be carried with the sheet beneath the blade, the thickness of this layer of cement corresponding to the Vdistance that the edge of the blade is spaced from the surfaceof the paper, Ywhich in the present embodiment is about .005 of an inch. It is of course, not desirable that the outer surface of the finished tube shall be coated with the cement, and I have therefore provided the cement applying device with controlling means which will cause the cement to be applied only to that portion of the sheet which forms the inner plies of the tube. In the present instance the tube will comprise substantially 5 plies of the paper, and I have, therefore, so constructedl the mechanism that the cement Vwill be appliedV to the surface of the sheet for approximately if; of its length, and inasmuch as the cement is here applied to the upper surface of the sheet, which forms the outer surfaces of the several plies of the tube, I apply the cement to the forward portion of the sheet and leave the rear portion ofthe sheet uncemented.

To control the application of the cement to the sheet I employ a fountain ll which is here shown in the form of a troughshaped member extending transversely of the web and pivotally mounted at its upper edge between the` side members 1 of the supporting frame. The arrangement of the fountain is suchthat the lower edge thereof `will lie close to the surface of the paper when the fountain is in its operative position and, when the fountain is not in its operative position, will lie close to the face of the lblade 10 a short distance above the surface of the paper. The'mass of cement is carried in the trough-like fountain and the shape of the fountain is suoli that when it is in its normal or operative position the l cement will flow forward onto the web and will be carried by the web against the blade l0. Then the fountain is swung forward into its inoperative position, the edge of the fountain will gather up the mass of cement and lift the same out of engagement with the web of paper, so that no cement will be applied to the paper so long as the fountain is in Vits inoperative position. A suitable controlling device automatically actuates the fountain to cause the cement to be applied to the desired portion only of the web of paper. Vl`his controlling device may be of any suitable character, but I prefer to provide a cam l2 arranged to coperate with a finger 13 rigidly connected with the fountain. The cam is so placed that .it will engage the finger land hold the fountain in its retracted or operative position for such period After the web of paper leaves the feeding and oementing devices, it is acted upon by a suitable cutting device which separates it into sheets of the desired length. In that for ni of the mechanism here illustrated the cutting device comprises a fixed blade let' extending transversely to theline of travel of the web, and preferably mounted upon a triangular supporting bar l5, so that the blade sets at an inclination to the vertical. Cooperating with the fixed blade 14 is a movable blade 16 which is here shown as extending lengthwise of a drum i7 which is rotatably mounted in the side members l of the supporting frame. The movement of the rotatable cutter 16 is so timed with relation to the feeding and cement applying devices that the web will be divided into sheets of the desired length, and that each sheet will have a portion of its surface coated with cement and another portion thereof free from cement and, as has been explained, in the present instance, the web is cut near the rear end of the unceniented portion thereof, so that the uncoated part of the sheet will be at the rear end thereof.

The several parts of the mechanism so far described may be driven in any suitable manner, and from any suitable source of power. n the present construction l have mounted an electric motor i8 in front of the suppe JA'ng frame l. and have geared this motor a counter-shaft 19 having a sprocket Wheel which co ,nccted by a drive chain 2l with a sprocket vn el 252, mounted on one of the side frame members, and having scoured thereto a gear which ni with a second gear also mounted on the sioe Aieriber of the frame. digidly connectedwith the gear 24is a beveled gear Z5 With which meshes a second beveled 526 Which is rigidly secured to a shaft 27 having on its opposite end a beveled gear 28 which meshes With a beveled gear 29 on the shaft of the drum l? of the cutting device. ligidiy connected with the beveled gear 29 is a spur ge which is connected by a suitable train gearing 3i with gear on the shaft 7 of the drum 'i' of the feedii A device. Connected with the is gear o3 which meshes With a gear 34 rigidly connected with the cam l2. The ratio of the several gear trains, with `relation to each other and to the driving motor, is such as to cause he several parts of the mechanism to operate at the desired relative speeds.

An endless conveyer 35, which is preferably driven from the countershaft 19 through a drive chain 36, receives the severed sheet and conveys it to a Winding mechanism, arranged at that end of the conveyor remetn from the se /ering device. This Windino` device preferably consists cfa plurality ot Winding members or mandrels 37 arranged to be brought successively into position receive a sheet of paper from said conveyor. In the present instance, I have provided four Winding elements and these elements are i the form of mandrels, each of Which is adapted' to grip the forward edge of the sheet of paper and Wind the sheet about the mandrel. The several mandrels are mounted for rota"- tion about common center which is so arranged that when a mandrel is in uppervmost position it will be in a position to receive the sheet from the conveyer. The manner of mounting and operating the several mandrels may taire various forms but the present construction each mandrel comprises a shaft 38 which is journaled at one end in one arm of a. supporting structure 39 which in turn is rigidly secured to a main shaft 4() journaled in frame members 4l and 42 and driven by suitable gearing 43 from the coun ter shaft 19.

Each mandrel is provided With a gripping device, to grip the forward edge of the sheet, and this device may be of any suitable cha acter, either mechanical or pneumatic. A mechanical gripping device is here shown and comprises a gripping member or bar 44 er; iending lengthwise of the mandrel in a reformed in the periphery thereof. This gripping bar is pivotally mounted and is preferably carried by a shaft 46 mounted in the recess and provided at its ends Witl actuating device, by means of `which the Y ipping` member may be rocked about its fis and caused to clamp the edge of the sheet between the bar and the edge of the recess 45. rEhe actuating device is here shown as coLA pr sing trip iingers or cams 47 and 48, Which LVidly secured to the ends of the shaft and arranged to engage fixed members or stops, 47a and 48a, which are mounted on a lined part of the machine and so arranged that the finger 47' .vill engage the stop 47a and will be actuated to move the gripping member or bar into gripping position when the mandrel is in a position to receive the sheet. The gripping bar vill be retained in its gripping position until the mandrel has made at least one rotation about its axis, when the iinger 4S will engage the stop 48 and will be actuated to release 'the gripping' evice and the sheet. The gripping device or bar may be held in its operative position in any suitable manner. inasmuch as the mandrel and the actuating devices or fingers are rotating constantly, l prefer to use a spring-actuated device which will hold the bar in either its operative or its inoperative position until it is positively removed from that position. As here shown, a spring 44a is connected at one end with the bei* and at the other end With the supporting member for the shaft 4.6. This spring is so arranged that When the bar is moved from one position to the other the spring will be ca ied across the aXis of the bar, thus causing it to hold the bar in that position to which it has been moved.

lin the construction here shown the mandrei is provided at each end with a supporting bracket or spider 49 which is mounted on and rotatable with the shaft 38 of he mandrel, the arms of the supporting bracket at that end of the mandrel adjacent to the frame member 42 being of a length less than the radius ofthe mandrel, so that the finished tube can be removed from the mandrel over this bracket. The bracket at that end of the shaft adjacent to the frame member 4l is arranged betWeen the end of the mandrel and the supporting member 39. in the present .Construction the shaft 46 of the gripping device is mounted in the arms of these brackets. The several mandrels are rotated about their individual axes by means of pinions 50 rigidly secured to the ends of the respective shafts and meshing with a fixed gear 5l arranged concentrieally of the shaft 40. As the shaft 40 is rotated the several mandrels are caused to travel about the axis of that shaft, and at the same time tie r spective mandrels are rotated about their individual axes at a high rate of speed, the arra pref ibly being such that each mandrel Will the number of rotations necessary to Wind the sheet .gout the same during the first part of its bodily movement after it has received the sheet. Cooperating with the man. drels, as they wind the sheets, are one or more outside pressure rollers 52 which are so arranged that they will engage the sheet as it is being wound about the n'iandrel and hold the same in firm, smooth engagement with the mandrel during the winding' of the first ply, and with the successive plies of the tube during the remainder of the winding operation, thus causingl the successive plies to be pressed firmly into engagement one with the other. These rollers may be mounted in various ways and `in various positions with relation to the mandrels, so long as they will bear upon the niandrels during their rotations about their common axis. in the present construction they are mounted between the path of the mandrels and the shaft a0, and are journaled at one end in the supporting structure or frame member l2 and are carried at their other end in a collar 7i), which is rotatablyvmounted upon thatV portion of the shaft 4i@ adjacent the end of the mandrel. To hold this collar against rotation with the shaft and thus provide fixed bearings for the rollers 52, 1 have connected the collar 70, by means of a sleeve 7l, with the supporting structure or frame 42 at 'the `opposite end of the machine. The rollers are preferably positively rotated and, to this end, each is provided with a pinion 7 2 which meshes with a gear 73 rigidly secured to and rotating with the shaft lll). rllhe several sections of each mandrel may be held in engagement with the tapered ends of the sleeve in various ways, but 1 have herein employed a spring for this purpose.

To permit the finished tubes to be removed from the mandrels, l preferably so construct the mandrels that they may be collapsed, or contracted, to reduce their diameter and thus release the tube therefrom. To accomplish this, each mandrel 37 is made up of a plurality of segmental sections arranged-about the shaft and capable of a limited radial movement relative to said shaft. Vln the present construction, the sections of each mandrel are supported by the corresponding -arms of the brackets 49 and are here shown as secured to these brackets,

by means of projections or pins 54; which extend through openings 55 formed in the ends of the arms of the brackets and elongated radially thereof to permit of the movement of the pins and the sections of the mandrels. Mounted upon the shaft 3S is a sleeve 56 which is held against rotation relative to the shaft, but is capable of movement longitudinally thereof. The sleeve has its end portions tapered, as shown at 57 and 58, and the end portions of the segmental sections of the mandrel are shaped to correspond to the taper of the respective portions of the sleeve, the intermediate portions of the sections being so shaped that they are out of engagement with the sleeve. As here shown, the supporting` pins orprojections 54 are mounted in slide blocks 75, which are mounted in the openings 55 in the respective arms of the spider and are provided with guide pins 7 6, about which are coiled springs 77, which are confined between the outer walls of the openings 55 and the slide blocks 7 5, and thus exert an inward pressure upon the slide blocks and the sections of the mandi-els, which serve to hold these sections firmly in engagement with the beveled or tapered portions of the sleeve. ifhus, when the sleeve is in its innermost position, as shown in Fig. el, the sections of themandrel will be held in their outermost or normal positions, and when the sleeve is nioved to the left or partially withdrawn from the mandrel, the springs will move the sections of the mandrel inwardly, thus con'- tracting the mandrel and reducing its diameter suliicicntly to release the tube which has been wound about the sameand-permit it to be easily slipped from the mandrel.`

Preferably the pins 54E are permanently retained within the slide blocks 75, by providing the Vsame with enlarged heads, or otherx wise, to hold the spider against movement with the sleeve 57but, obviously, the slide block may move upon the pin provided the latter is long enough to prevent it being withdrawn from the block. The lengthwise movement is imparted to the sleeve, to cause the mandrel to be expanded and contracted at the proper .times by suitable mechanism, which, in the present machine, consists ot grooved collars 59 rotatably mounted on the respec 've shafts 38 and rigidlyy secured to the respective sleeves. These collars travel about an annular fixed cam 60 having a circumferential rib 61, which enters the grooves in the several collars. This cam is so shaped that as each Vmandrel begins its upward movement, after the sheet has been completely wound thereon, the sleeve will be shifted to theleft, in Fig. 4, and the mandrel collapsed to release the tube. After the tube has been released from the mandrel it is removed therefrom over that end of the mandrel adjacent to the supporting frame 42. This frame is'of such vcharacter as to support the ends of the mandrels and permit them to rotate both about the axis ofthe shaft a() and about their individual axes, and it is, to this end, provided in itsinner face, with a circumferential groove 62 into which project the adjacent ends of the shafts 38 these shafts being preferably provided with rollers 63 to reduce the friction of their contact with the supporting structures. `To permit the finished tube to bek removed, the supporting structure 4t2 is broken away on one side, as shown at 64, for a distance sui'licient to permit of the passage of the tube.

As the mandrel carrying the nished tube moves upwardly, after the mandrel has been collapsed, the. tube is quickly moved length wise of the mandrel through the opening 64 in the supporting structure 42. This is preferably accomolish ,d by means of an ejector, which is here shown', in the form of a belt 65, moving lengthwise of the mandrel, and ar `anged to engage the tube as it hangs looselyv on the collapsed mandrel, opposite the opening` 64 in the supporting structure 42. This eje@ belt is operated at a very high rate of speed, so that the tube is quickly removed from the mandrel. The belt may be mounted in any suitable manner and is here shown as mounted on pulleys or drums 66 carried by frame members or supporting brackets 67 and is driven through suitable chain gearing G8 from the counter shaft 19.

The operation of the mechanism will be readily understood from the foregoing description of the several parts thereof, and it will be apparent that it is wholly automatic in its operatic-n, and will, without interposition on the part of the operator, feed a web of paper or other material from a roll; apply a cement to certain predetermined portions of the surface of the web; sever the web into sections or sheets, each of which has one end coated with cement and the other end uncoated; deliver the cemented sheet to a winding device, which will grip the edge of the sheet; cause the sheet to be wound tightly about a mandrel to form a tube; then release the tube from the mandrel and eject the tube from the machine. It will further be apparent that the machine will operate at a very high rate of speed, the four mandrels of the winding mechanism operating successively to talre the sheets from the conveyor and wind the same, so that four tubes are in the process of completion at all times during the operation of the machine.

Further it will be apparent that the mech anisni is of such a character that it will handle webs of various widths, the present machine being designed to receive a web as wide as 112 inches. Further it will be apparent that the tubes may be of various kinds, the pref' nt machine being designed to form cylindrical A.aes to rec ivo the propellent charges for and inch howitzers, but oliiviously the and the cross sectional. shape of the tube can be varied by changing the n'iandrels, it will be uro' rstood that the -as tube and tnbulaig as herein employed, are not limited to cylindrical st'uctures,

lfhile I have shown and described one embodiment of invention, I wish it to be understood that I do not desire to be limited to the details of construction, as various modications may occur to persons skilled in the art.

Having now fully described my invention, what I claim as new and desire to secure by Letters Patent is:

l. In a mechanism of the character described, means for feeding a web of flexible material from a roll such material, a device operating intermittently to cement to the surface of said web for the entire Width thereof as it is fed from said roll, a device operating to sever sections of material from said web, said severinfD being so timed with relation to sain c i applying device that each section of mater severed from said web will have a portion only of its surface coated with cement, and a device to receive said severed sheet and wind the same into tubular form.

2. In a mechanism of the character described, means for feeding a web of flexible material from a roll, a device operating intermittently to apply cement to the surface of said web for the entire width thereof, means for severing successive sections of material from said web, the operation ol said severing means being so timed that the web will be severed at the forward edge of the cemented portion thereof and each section of material severed from said web Will have the forward portion of its surface coated with cement and the rear portion of its surface uncoated, and a device to receive said severed section of mate ial, and wind the same into tubular form with the uncoated portion thereof outward.

3. In a mechanism of the charac'ger described, means for feeding a web of l'lerible material from a roll, a device ope" ing intermittently to apply cement to the surface of said web across the entire width thereof means for severing succc ive sections or material from said web after the cement has been applied thereto and z :i transverse line at the edge of the cer c tion thereof, and means acting on the in ividual severed sections to wind the same into tubular form.

4. In a mechanism of the character de scribed, means for advancing a web of matorial with a continuous and uuinte movement, and means for acting on said Jeb during such movement to divide the serie into sections, and apply ce a device to receive the i after the cement lrs been appli and wind 'said sections into tubul 5. In a mechanism of scribed, means for atbvanciug` a rial with a continuous uninterriu ment, means acting on said. web of material during such movement to divide the same into sections and apply cement thereto, and a plurality of continuously moving winding devices movable su cessively into a position to receive a section of said continuously moving web, and means for actuating each indi- IOS vidualwinding device to cause it to vvind its sheet into tubular form.

6. in a mechanism of the character described, means ior advancing` a web oif material With a continuous and uninterrupter movement, means acting on said web material during such movement 'to 'divide the same into sections and apply cement thereto, v

a continuously rotating structure, a plurality of Winding devices mounted on said strue-` ture and arrangedl to be moved successively into-a position to receivev a section` of said Web of material asthe latter moves iterivardly, and means for rotating each individual winding' device to cause it to Wind its sheet into tubular'iiorm.

7. In a mechanism ot the character described, means foradvaiieing);` :.iiveb Otmaterial ivitli a continuous and uninterrupted movement7 means acting on said web ot material during such movement to divide the same into sections and apply'cement thereto, a continuously rotating'v structure, a plurality oif Winding` devices mounted oirsaid struc-v ture and arranged to bevinoved'successivelyinto a position to receive alsection of said-4 Web of material as the latter. movesl llorvv'ardly, and means for continuously rotatingV terial during,` such movement toA divide thev same into sections and apply cement thereto, a continuously rotatingl structure, a plurality oi Winding devices mounted on said structure and arranged to be moved successively into a position to receive a section oi' said ivob of' material as the latter moves 'tor- Wardly, means for rotating1 each indif'idual Winding' device to cause it to Wind its sheet into tubular form, and means for discharging the resulting tube from said winding;l device Without interruptingthe movement of said rotating structure.

9. In a mechanism oli' the character dc scribed, means 'lor advancing a web oi inrterial with a continuous andl uninterrupted movement, and means for acting on said web during such movement to divide the saine into sections and apply cement thereto, a continuously rotating;` structure, a plurality of mandrels carried by said structure and tionV of said Web to be Wound intotubular form, and means for releasing` theresultingi:

tube and discharging, the same' from said mandrel Without interrupting; the movement of said continuously rotating` structure.

l0. Inra mechanism of the character described, means for advancing a 'web of material with a continuous and uninterrupted movement, means acting on said Web during such movement to divide the same into sections and apply cement thereto, winding mechanism comprising' a plurality or drels continuously rotatable about common axis, each of said mandrels being also rotata* ble about its individual axis andhaving means to grip the edge of' a sheet ot said material and to causeit to be Wound about the saine, means actuated by the movement of eachv mandrel about said common axis to contract the sameand release the resulting tube therefrom, and means to discharge said tube 'from said mandrel Without interrupting the movement of said mandrel.

l1. In a mechanism of the character described,` a Winding' device comprising' a mandrel, means for imparting' continuous'bodily movement to said mandrel, said mandrel being arranged to be moved into and outlet a position to receivea sheet of flexible 'matei'ial, means for rotating said mandrel to cause said sheet'o'f material to be Wound about the same, a gripping device carried by said mandreland adapted to grip the: edge of a sheet of material Without interrupting the bodily movement of said mandrel, means actuated by said movement otsaid mandrel to cause said gripping device to grip said sheet, and other means actuated by the move ment of said mandrel to cause said gripping device to release said sheet after said mandrel has made one complete rotation about its axis.

l2. In a mechanism of the character described, a Winding device comprising a mandrel, means ior moving said mandrel into and out oit' position to receive a sheet of flexible material, means for rotating' said mandrel to cause said sheet ot material to be Wound about the same, a gripping; device carried by said mandrel and adapted to grip' the edge of the said sheet oli material ivitl'iout interrupting the movement ot said mandrel, and means controlled by the bodily movement ot said mandrel for causing said gripping' device to iirst grip the edge ot said sheet of material and to then release the same after said mandrel has madea complete rotation about its axis.

13. In a mechanism of the character described a ivindine' devine cemnrisinfr a nlni b L 25 L mandi'els to grip the edge of a sheet of lexi Vble material to cause the same to be Wrapped around said mandrels as the latter rotatesaboutfits individual axis, a trippinc' device connected With said gripping' device and fixed stops to engage said tripping device to actuate said gripping device.

14. In a mechanism of the character described, frame members, a supporting structure rotatably mounted between said frame members, a mandrel carried by said structure, ymeans for rotating said mandrel to cause a sheet oit material to be wrapped about the same, and means for releasing` the resulting tube from said mandrel, one ot' said `frame members having an opening with which said mandrel registers during the rotation of said supporting structure, and through which the tube may be discharged from said mandrel.

l5. In a mechanism ot the character described, frame members, a supporting structure rotatably mounted between said frame' members, a mandrel carried by said structure, means for rotating said mandrel to cause a. sheet or material to be wrapped about the same, means for releasing the resulting tube from said mandrel, one of said frame members having an opening with which said. mandrel registers during the rotation of said supporting structure, and an ejecting device to act on said tube while said mandrel is in line with said opening to discharge the tube from the mandrel through said opening.

16. In a mechanism of the character described, frame members, a supporting structure rotatably mounted between said trame members, means for continuously rotating said supporting structure, a mandrel carried by said structure, means for rotating said mandrel to cause a sheet of material to be wrapped about the same, means ror releasing theresulting tube from said mandrel, one ofsaid frame members having an opening with which said mandrel registers dur-- ing the rotation of said supporting structure, and an eject-ing device to act on said tube while said mandrel is in line with said opening without interrupting the movement of said supporting structure to discharge the tube from the mandrel through said opening.

l?. In a mechanism of the character described, frame members, a supporting structure rotatably mounted between said Yframe members, means 'for continuously rotating said supporting structure, a mandrel carried by said structure, means for rotating said mandrel to cause a sheet of material to be wrapped about the same, means for releasing the resulting tube from said mandrel, and an ejecting device to act on said tube without interrupting the movement ot said supporting struct-ure to discharge the tube from said mandrel.

18. In a mechanism of the character described, rrame members, a supporting structure rotatably mounted between said frame members, means 'for continuously rotating said supporting structure, a mandrel carried by said structure, means for rotating said mandrel'to cause a sheet of material to be vrapoed about the same, means for releasing ine resulting tube "from said mandrel, device arranged adjacent to mandrel and between the ,i veel and 1raving a portion moving in the direction oi the length or said mandrel 'to eng said tube and discharge the same Vron", said mandrel.

l). In a mechanism or the character described, fr me members, a supporting structure rotatably mounted between said trame members, a mandrel carried by said structure, means :tor rotating said mandrel to cause a sheet of material to be wrapped about the s e, means for releasing the retube rrom said mandrel, and an ejec+- ice having a portion moving in the ,on oi ie le .0th ol said mandrel and nged to engage the tube on said mandrel between the ends thereof, and discharge the 1oni said mandrel.

20. In a mechanism of the character described, a f'inding device comprising traine members, a supporting structure rotatably mounted between said iframe members, and mandrels larried by said supporting structure, one oi said frame members constituting a support 'for the acent ends ot said mandreis and haring` an opening with which said mandrels will successively register and tlnough which a structure formed on said mandrel may be discharged.

2l. In a meclfianism of the character described, mandrel mounted for movement into and out et a position to receive a sheet oit il' (ible m' tori al, means for rotating said l to a ind said sheet of material about Le, means to release the resulting tube `d mandrel, and an ejecting device e the outer surface of said tube and remove the same lengthwise from said mandrel.

52. In a mechanism of the character described., a mandrel mounted for movement nto and out of a position to receive a sheet o'' ilexible material, means for rotating said mandrel to wind said sheet of material about the same, means to release the resulting tube from said mandrel, and an ejecting device having a part movable in the direction ol the length of said mandrel, and arranged to frictionally engage the outer surface or said tube to discharge the same from said mandrel.

23. In a mechanism of the character described, a winding device comprising frame members, a shaft journaled in said frame members, supporting structure carried by said shaft adjacent to one of said frame members, mandrels carried by said supporting structure, the other of said Jframe members having means to support the adjacent ends of said mandreds and having an opening with which said mandrels will register successively.

2d. ln a mechanism of the character described, a winding device comprising a revoluble supporting structure, a plurality of mandrels each comprising a plurality of longitudinal sections, and an actuating member arranged within said sections and movable longitudinally thereof to impart radial movement to said sections, means for rotating said mandrels about their individual arles, and an annular cam arranged adjacent to one end of said revoluble supporting structure and near the path of travel ofsaid` mandrels, the actuating member of eachmandrcl having a part arranged normally in engagement with said cam wherebyv longitudinal movement will be imparted to said ctuatingl member as the mandrel revolves about the aXis ofsaid supporting structure.

25. ln a mechanism of the character de scribed, a windingV device comprising a revoluble vsupporting structure, a plurality of mandrels comprising a plurality of longitudinal sections, and an actuating member arranged in said sections and movable longitudinally thereof to impart radial movement to said sections, means for rotating said mandrels about their individual axes, and an annular cam arranged adjacent to one end of said revoluble supporting structure and neary the path of travel of said mandrel, the actuating member of each mandrel having a part in permanent engagement w-ith said cam whereby said actuating member will be moved first in one direction and then in the other as said mandrel moves about the aXis of said supporting structure.

26. In a mechanism of the character de scribed, a winding device comprising a revoluble supporting structure, a plurality of mandrels carried by said structure, each of said mandrels comprising a plurality of longitudinal sections and an actuating member arranged within said sections and movable longitudinally thereof to impart radial movement to said sections, means for rotating saidmandrels about their longitudinal axes, and a fixed cam arranged adjacent to said revoluble supporting' structure, the actuating member of each mandrel having a part arranged to engage said cam, whereby longitudinal movement will be imparted to said actuating member as the mandrel revolves about the axis of said supporting structure, and an endless conveyer arranged adjacent to the path of travel of said mandrels, and adapted to engage the articleson said mandrels as they pass the same and to move said articles lengthwise of said mandrels.

27. In a mechanism of thev character described, a winding device comprising supporting frame members, asupporting struc- A ture rotatably mounted between said frame.

members, a plurality of mandrels carried by said supporting structure, and each consisting of a plurality V.of longitudinal sections, an actuating member to impart radial .movement to said sections, means for rotating said mandrels about their individual axes, a frame member at one end of said mandrels having an opening therein,

scribed a winding device comprising su-` porting frame members, a shaft journaled in said frame members, a supporting structure rigidly secured to said shaft, a pluralitj7 of mandrels carried by said'supporting structure and each consisting of a plurality of longitudinal sections, and an actuating member to impart radial movement to said sections, means for rotating said mandrels about their individual axes, the frame member at one end of said mandrels having an opening therein, a belt arrangedr adjacent to the path oftravel of said mandrel in line with said opening, and a fixed actuating device to cause the sections of each mandrel to move inwardlyjust before said mandrel reaches said belt.

2i). 1n a mechanism of the character described, a winding device comprising frame members, a shaft journaled in said frame members, a supporting member rigidly secured to said shaft near one of said frame members, a plurality of mandrels each comprising a shaft journaled atene end in said supporting member and havingl its other end adaptedto travel in a-guideway in the other frame member, a plurality of longitudinal sections surrounding said shaft, a sleeve mounted on said shaft for rotation therewith and capable of longitudinal movement relative thereto to impart radial movement to saidsections, means` for rotating said shafts, said last mentioned frame member having an opening therein through which the end of the shaft of eachmandrel passes without support to permit` the article formed on the same to be removed lengthwise therefrom, means for actuating the sleeveof each mandrel as it approaches said opening to cause saidsections to move inwardly, and an ejecting device arranged adjacent to said opening to remove said article from said mandrel through saidiopening.

30. In a mechanism of the character described, a winding device comprising a mandrel mountedforb0dly movement into and out of a position to receive a sheet of flexibie material, means 'or continuously rotating said mandrel about its individual axis, means carried by said mandrel to grip the edge or' said sheet ot flexible material during the continuous rotation oi' said mandrel and cause the same to be Wrapped about the mandrel as the latter rotates, and a pressure roller arranged to engage said sheet as it is Wound about said mandrel and press the same into close contact therewith.

Si. ln a mechanism of the character described, a Winding device comprising a mandrel mounted for bodily movement into and out of a position to receive a sheet of ilexibie material, means for rotating said mandrel about its individual axis, means carried by said mandrel to grip the edge oit' said sheet of flexible material and cause the same to be Wrapped about the mandrel as the latter rotates, and a series of pressure rollers mounted on fixed axes adjacent to the path of the bodily movement of said mandrel and adapted to be successively engaged by the sheet Wound upon said mandrel and press the same into close contact with the mandrel and With the plies of said sheet which have been Wound about said mandrel.

32. In a mechanism of the character described, a Winding device comprising a plurality of mandrels mounted to rotate about a common axis, means 'for rotating each of said mandrels about its individual axis, means carried by each of said mandrels for gripping the edge of a sheet of flexible material to cause the same to be Wrapped around said mandrel as the latter rotates, and a series of pressure rollers mounted on fixed axes adjacent to the path of rotation of said mandrels about said common axis and adapted to successively engage the sheets that are Wound about the respective mandrels, and means for rotating each pressure roller about its individual axis.

ln a mechanism of the character described, vvinding device comprising a plurality of mand als mounted to rotate about a common axis, means for rotating each of said mandreis about its individual axis, means carried by each of said mandrels Jor gripping the edge cia a sheet oit i'iexible material to cause the same to be Wrapped around said mamlrel as the latter rotates, and a series pressure rollers mounted on iixed axes Within the path described by said mandrels as they move about their common axis, and arranged be successively engaged by the material on each mandrel.

ln a mechanism ot the character described a Winding device comprising a main shaft, a supporting structure carried by said shaft, a plurality mandrels carried by said supporting structure iter rotation about said common shaft, mean :for rotating each of said mandrels about its individual axis, means carried by each mandrel for gripping the edge of a sheet of flexible material and causing the same to be Wound about the mandrel as the latter rotates, a supporting member mounted on said shaft near said supporting structure, means for connecting said supporting member with a fixed part of the mechanism to hold the same against rotation With said shaft, and pressure rollers journaled at one end in said supporting member and at the other end in a ixed part or said mechanism, and arranged adjacent to the path through Which said mandrels move in their travel about said shaft.

In testimony whereof, I affix my signature hereto.

AXEL C. V. MALM. 

